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Room: 208B

Date: 4/19/2023

Session Time: 2:00 PM to 3:15 PM (local time)

Subduction zones are among the most seismically active regions on Earth. Subducting slabs can affect the convection of the Earth's mantle and the geochemical evolution of the Earth. However, subducting slabs have complex structures and dynamics in terms of their geometry, age, deformation history, stress state, volatile content, thermal structure and seismicity behavior. Most deep earthquakes (depth > 70 km) in the mantle occur in subducting slabs. They are further categorized as intermediate-depth earthquakes (70-350 km depth) and deep-focus earthquakes (350-700 km depth). The cause of deep earthquakes is still a major scientific puzzle. In this session, we invite contributions that address the structure and properties of subducting slabs and deep earthquakes. We seek to bring together researchers from a wide range of studies including observations, laboratory experiments, numerical modeling and theoretical analyses. Novel ideas/models/approaches and/or unusual datasets/observations are especially welcome. Broader scientific issues to be addressed may include slab structure, the distribution of volatile content and stress state in subducting slabs and deep seismogenesis, as well as interactions between these topics.

Conveners:

Marco Pilz, GFZ Potsdam (pilz@gfz-potsdam. de)

Chuanbin Zhu, University of Canterbury (chuanbin. zhu@gfz-potsdam.de)

Hiroshi Kawase, Disaster Prevention Research Institute, University of Kyoto (kawase.hiroshi.6x@ kyoto-u.ac.jp)

Andres Olivar Castano, University of Potsdam (andres.olivar-castano@uni-potsdam.de)

Oral Presentations